By checking your levels after eating Various foods you can understand what foods suit you in what quantity-its important for you to know how to Self-Manage your food and we teach our patients this because it's not realistic to ask somebody to stick to a rigid diet forever as well as not realistic to keep having high amounts of foods that are increasing the glucose levels. Each food affects different people differently. Have you been checked for type 2 versus type 1 Diabetes? Are you not on insulin?